---
name: "Sub::HandlesVia::HandlerLibrary::Bool"
section: "3pm"
platform: "linux"
package: "perl-sub-handlesvia"
version: "0.053005-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/Sub::HandlesVia::HandlerLibrary::Bool"
---

# Sub::HandlesVia::HandlerLibrary::Bool(3pm)

library of bool-related methods

## NAME

Sub::HandlesVia::HandlerLibrary::Bool - library of bool-related methods

## SYNOPSIS

```
  package My::Class {
    use Moo;
    use Sub::HandlesVia;
    use Types::Standard 'Bool';
    has attr => (
      is => 'rwp',
      isa => Bool,
      handles_via => 'Bool',
      handles => {
        'my_not' => 'not',
        'my_reset' => 'reset',
        'my_set' => 'set',
        'my_toggle' => 'toggle',
        'my_unset' => 'unset',
      },
    );
  }
```

## DESCRIPTION

This is a library of methods for Sub::HandlesVia.

## DELEGATABLE METHODS

### not()

Returns the opposite value of the boolean.

```
  my $object = My::Class->new( attr => 1 );
  say $object->my_not(); ## ==> false
```

### reset()

Sets the boolean to its default value, or false if it has no default.

### set()

Sets the value of the boolean to true.

```
  my $object = My::Class->new();
  $object->my_set();
  say $object->attr; ## ==> true
```

### toggle()

Toggles the truth value of the boolean.

```
  my $object = My::Class->new();
  $object->my_toggle();
  say $object->attr; ## ==> true
  $object->my_toggle();
  say $object->attr; ## ==> false
```

### unset()

Sets the value of the boolean to false.

```
  my $object = My::Class->new();
  $object->my_unset();
  say $object->attr; ## ==> false
```

## BUGS

Please report any bugs to \<https://github.com/tobyink/p5-sub-handlesvia/issues\>.

## SEE ALSO

Sub::HandlesVia.

## AUTHOR

Toby Inkster \<tobyink@cpan.org\>.

## COPYRIGHT AND LICENCE

This software is copyright (c) 2020, 2022 by Toby Inkster.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

## DISCLAIMER OF WARRANTIES

THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.